The theory of literature is a theoretical method to study the phenomenon and process of literature. By analyzing the language, symbols, symbols, and other elements in literary works, it probes into the principles and laws behind literary creation. When analyzing a literary work, one could use literary theory to explore the theme, plot, character creation, language use, and so on. The following is an analysis of several aspects of a literary work: Thematic analysis: The theme of a literary work usually reflects the author's thoughts and feelings about society, life, love, and so on. One could understand the author's inner world and emotional state through an in-depth discussion of the theme of the work. 2. Plot analysis: The plot of a literary work is usually composed of a series of events and scenes. Through the ups and downs of the plot, the character's personality, emotions, and fate are expressed. One could understand the narrative structure and story logic of the novel by analyzing the plot. Character Creation: The characters in literary works are usually portrayed by the author through words, actions, expressions, etc. Their personality, emotions, behavior, and thoughts are all manifestations of the theme of the work. Through analyzing the characters, one could understand how the author expressed the theme of the work through the characters. 4. Use of language: The language of literary works usually uses symbols and symbols to express the author's emotions and thoughts. By analyzing the use of language, we can understand how the author uses language to express the theme and emotion, as well as the characteristics and style of the language. 5. Literature style: The style of a literary work is usually the expression and narrative techniques used by the author in the creation. By analyzing the literary style, one could understand the author's writing style and characteristics, as well as the differences and connections between different styles of literature. Through the use of literary theory to analyze a literary work, we can have a deeper understanding of the content and characteristics of the work, and at the same time, we can better understand and appreciate the literary work.